A poor man loudly caught a grasshopper. When the man was about to kill, Guo Guo said, "Why did you kill me for no reason? I didn't hurt crops or destroy forests. I make a pleasant sound, I can make people happy, maybe it's a little noisy, but other than that, it's impeccable. " Hearing this, the man let go of Guo Guo.

The story is correct and convincing.